10.28.05 - Molecular Composition of Green Plants Background...

Info icon This preview shows pages 1–2. Sign up to view the full content.

October 28, 2005 Molecular Composition of Green Plants Background Helmont’s experiment o helmont conducted an experiment in which he planted a tree and weighed the soil at the start and then 5 yrs after, when the tree had grown to full size, and the soil weighed the same thing. o He concluded that the mass of the tree must have come from the water. O18 Experiment (Lecture 18) o Mass of sugar is 180. o Mass of C6 and O6 is 168 The Process: In the leaves o CO2 goes into leaf o During the process, O2 and H2O are released into air. In the roots o Consume oxygen and water o Produce CO2, which is released into soil Review of Opening and Closing Stomata Guard cells in the stomata become turgid when water flows in, causing cells to buckle and open An electrical gradient causes the protons to be pumped out of the cell, making it hyperpolarized (negative) Proton pump makes potassium go inside of the cell Water also flows in with the potassium because of osmosis (more solutes inside).
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Image of page 2
This is the end of the preview. Sign up to access the rest of the document.
  • Summer '07
  • GILBERT,C.
  • Plants, trace elements, Helmont, Air Roots Roots, Plant needs phosphorus, Ca++ Mg Soil

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern